HLA-A and Behcet disease: In contrast to other studies, HLA-A*26 was also elevated in the HLA-B*51-negative Turkish BD patients (5 (10.9%) patients versus 1 (0.8%) healthy Turks, Pc = 0.019, OR = 15.73, 95% CI 1.78 to 138.56), however, significance should be confirmed in a larger patient group.